Lock for door rollers



Sept. 20, 1932. l O J, E, SCOTT 1,878,333

LOCK FOR DOOR ROLLERS Filed Jan. 20, 1950 4 Sheets-Sheet l i-Q W J. E. SCOTT lLOCK FOR DOOR ROLLERS sept. 2o, 1932.

4 Sheets-Sheet 2 Filed Jan 20, 195o SePt- 20, 1932- J. E. scoTT LOCK FOR DOOR ROLLERS 4V Sheets-Sheet 5 VE y52E.; Jan E Scott Sept. 20, 1932. 1. E. scoTT Loox FOR DOOR RoLLERs Filed Jan. 20, 1930 4 Sheets-Sheet 4 YPatented sept. 20,1932

@WED-STATES PA.iEN'f` JOHN n. scor'r, or DANVILL, ILLiNoIsQA'ssIGNoRTo ALLITHarRoU'rY company;

and the like. f

'Lil

' A saurait-hef Objeef'of the invention is;

. `roll-ers or wheels wherein pivotedrcams are' Y utilized and vwhich cams Vare maintained iri'r frictional locking engagementI with'fthe roll-V ers or wheels byresilient means `and 'whiehf are moved out of braking or locking position by a key orwsimilar structure moving the'cam's oF DANVILLE ILLINOIS, A .coRPoRATIoN oF DELAWARE YLOCK non Doon RoLL'ERs I Y i This invention relates to 1a looklfori'doo'rl rollers and particularly-for oneV with'heavy rollers used to Recently there rhave come into use very large doors for hangars, arodromes and sinnlar structures, .which 'doorsa're supportedV on `rollers of considerable weightl andfstrength for the purposev of movingnthedoors easily into opened Vand closed positions.` -These doors are very heavy7 necessitating therefore some means forlocking therollers against zicy cidental movement.

Hangarand aerodrome doors andthe likel are arranged so'that the 'rollers supporting the doors Y travel on rails for easy Vmovement of the doors,` and conseopuentlyv it requiresbut slight leifortto rolljthesefdQors; on the tracks..l

It is an object oi?'thefpresentinventiontojy provide means for l'locking' hangar doorjslip? porting rollers against'movement.

AAnother object of theinvention'is to pro-- vide ay frictionlock forfd'o'or `roller 'whichisf ndwhlch ,fear

normally in locking position readily be unlocked as desiredpf.

A further object Voi the inventionis to` '1; ro

vide a cam lock for door rollersWhich-is maintained normally in locking position andg which may be readily unlocked to allow move;

ment of the rollers. f Another and further object ,ofthe inventionis to provide locking means forhangar door rollers whereinffriction cams are prof` ,i vided forengagement with rollers or wheelsV L and whichl cams are maintained in lockingv position 'normally' and moved out offlocking positionbysuitable mechanism. vThecams, areso designed that when looking position any vtendency ofthe rollertomove willing crease the Vfrictional engagement with the" to provide locking means `for hangarl door y y gfmeans Support largedoors, partltlons,"

vwith the wheel as desiredl' l Y The above other.and furtherobjectsoftheinvention will be4r apparent"fromtheiollow Y in Opposition to the Aecording l brakejcontemplates the provision ofa cam" arranged to engage a portionof the A"roller or"- wheel 4and lock the' roller or." wheelagainst rotation in either direction, together with' means for freeing the amlfrom engagement 'te the inventari the lock oir @Een of theiesiliene f ing d escriptiomA accompanying drawingsand appended claims.

- Anl embodiment of 'the piesent' invention-ig illustrated l lf fhfa'ompanying drawings` Vand the'views thereof asY follows f1 e fFigurel isa fragmental inside' elevlienal view? of-a-portionjfofa door provided `with a"l roll-er 0r .wheel I construetion. thefV present inventionf Figure? 21is`V an enlarged fragmentalsec' tional. `Viewshowing the lillustrated form 1off ment with 'a iiange of a roller or wheel.

4'Figure 3 'isa" view similar toFigure Qshow-` cams infrietional locking o'rbraking engageing` the 'cams moved out g ofi:`ri ';tiona l braking or;` locking i engagement 'with rollerv or gwheel.

lFigure 4 is a vertica'lsectional View taken substantiallyv inthel plane of line I'YVl-IV'lof Figure l showing certain other parts in full lines.

Figure 5 is an enlarged ra'gmentalsec-v o Figurefl. f Y v .Figure 6"'is a sectional view: taken substanlj tially on line'VI-VI of Fi "urel looking in thedirectionindicatedfbyt e arrows. f f Figurel 7 is 'an elevation; of :removable handle'wit-h stemin section; v Figure Y8 isa View similar toFigureQlshow ing the foams infullglines and with theV key` parts are shown in locking position.

forthe operating key with lugs onthewheel. V *Y parts in section and tional view taken substantiallyon line VeYV y engagingia-ces of the cams'as straightil The f @aai'ngfor limiting movement of the handle g of a vhangardoor is illustratedY yin Figure 1 and as there illustrated includes a tube 1 which services as one side member of the door and a tube 2 spaced from tube 1. There are a plurality of said tubes or frame members in the door wheny same is made of sheet metal or theflike.`

A rollerframe A has side members 3 and v 4 which are attached to the inner faces ofi-the y tubeso'r frame .members .1 and 2 by means 4'of bolts 5 t or similar attaching means; l The upper end of the frame A isform'ed toprovide a cylindrical recess 6 while the lower por-tionfis formedto provide an enlargedcylindrical recess 7 the recesses 6 and 7 being in axial' tion 12 is screw threaded atl-@for entering;

the. threaded interiorof `a cylindrical exten'- sionvgn-14 which passes through the cylindrical opening` 7 in the frame A yand `integrally Y termed With-Which is ,a yoke zl5hevr1g doi/vnf l extendingside. members 16 and17 for'l Sun-Porting areIlerQr-Wheel B.; nv The side 17 of the yokehas an openiiig:18

` "iii throughthe samewhile-fthaside; 116 hasa threaded @mening '159' in axialy al'gnmentwth theopeningl in theotherside oftheyokeai f Y A shaft20having athreadedfjendk21and a e? heatd 2d24passes through'the opening 18 in the yoke-A member 17 and; is threaded intothe o'eninml) inthe oke member 16for sup- P e y t PQl-tng'the roller Orwheel B1. Antrfriction members 23 and 24 are inter- 435;l posediabout the shaft .20and engage against the hub ofthe wheel B` for supporting same ontheshaft 20.

The'head u2 is providedvvithaplurality of v indentations 25 for cooperation with a; fset 5.10; screw'26 entering themember 17 of the yoke lmfor locking the shaft20- inposition inthe: yoke; rlfhe shaft Y20 is turned totightenvthe g wheel-:B in'y any desirable manner7 Vthenthe .t set screw 26 is inserted inthemember 17 of, 5 5@ theyoke'through,v one'` of the 'indentations 25 ofthe, Yead 22, thusflo'ckingthe' shaft against Vniovementinthe yoke.` '4 j t Y V The wheel orroller B secured 4in the manner aboyev described hasl rotative or swivel movedoorpasses over a curved section of track.

rllheprovision-ofthe screw portion 13 off .the shaft enables vertical` adjustment' lof the roller B with respect tothebracket `A yto Y f i. PlTQRerlY; bang; fhezdors' and also to accomf eye 30 attached to the post or tube 2 and at modate the rollers to position the doors the desired distance above the track C.

The fact that the roller B is pivoted in its bracket A necessitates a cover plate for the roller opening to prevent admission of dirt, l ice, sleet5 snow ,and the like. rlhe illustrated form, of coverv forthe roller contemplates a plate 27 hinged at 28'to the tube or post 2 and overlying the roller B. The plate is shown in the.illustratedV form of the invention as -fbeingy ontheoutside of' the door as shown in Figure 6. The plate 27 of Figure 1 is the iii-sidev *of* the pla-te.

'A spring29 is fastened at one end to an theother end is securedto an eyeBl fastened Y. to vthe-plate 27 andnormally .holds the plate n inclosed position Vwith its free or outer edge 32 against .the outer post o r tube 1 .as ob- I served Figure.

Figure G showsthe wheel B pivoted to an extent tof move the plate 27"'away from-the post .or tube 1 andV showingr the position of the parts inthisrelation. r The sides v16andv 17 of the yoke are extendl ed at33 and 3 4 tofbear againstthe insideof the platef27 land urge the saine outwardly whenever the wheel B is swiveled in the bracket fA as it passes along the track C.

"Anotherlplate could if desired be placed [Q5 overthefinside of the Wheel'ory roller B in whicheventanother spring Y'similar to spring '29 would -be 4secured to the otherfplatey for'y keepingthe same closedin the. same manner as'descrbel-rspet to p1ate27. 5 y Theroller 'me Allis' covered on'eaoh sideL by ide plates jil'd' whiohzfplates termi-v nate Shortofthyoke 115.-

' i Plates 35"and36 aresecuredfin position on the door by jni'eans of screws 'engaging portions of the trame AL?? mha rouge-Or y@15B has "flan-ges 'as' ana 39 for guidingthe'roll'er or 'wheel' on track C. The roller 4is' formed with Van internal Av collarg42 surrounds the hub41 and is" freely movable on the same. Ears 43and 44 areformeduintegrally l with the collar 42 in axially spaced? relation andjextends vradially from the collar.

Cams45 and 46 are pivotalgly supportedV on posts 47V and 48, respectively' carried inthe ears 48"and 44'betwe`en. the shaft 20 and the flange 40.v .The cams yare opposed in position so thatone will effectively oppose rollingfmovement ofthefroller when vforce is ap'- pliedto the door to `moversame in one di'rec tion-fwhen locked! and the othercain opposing` effectto move the door in the opposite direci tion. The vfacesiof the'cams are curved more E25 direction, Each'fof the cams 45 and .46: has L;

's While the camfportions 59 and 60 thereof are Vand 60 issecured in Set screw 63 isused actuatonf.

anarcuate engaging surface 49 described on ashorter radius than lthe radius of the annular flange 40 sothatwhen in brak-ingor lock ing positionk andian eifort is madey to move the supported door in either directiomrone of the cams Will be forced into tight engage! ment Withvthe flange v40, or other Vpart of the Wheehand elfectivelylock theroller against movement.g '1;V j, The Vcollar 42.` is provided on .opposite sides. with bosses -751 for .supporting springs 52-53- The `.other ends ofnthe springsengage bosses 54-and 55 respectively on the cams 45 .and 46 to. prevent disengagement of the springs 52and53g- Normally thesprings 52 and I53 act against the cams ,45: and 46`toforce the cam. surfaces 49 against the inner annular iiangeA 40 for braking or `locking vroller B against-rotation With respect to the collar 42.y

. y n actuator 56 constituting in thepresent instance a cylindrical end 57 for entering a similarly ,shaped aperture inthe ear 44 and a stem 58'with oppositely extending cainsv59 threaded at 62 in the member 17 Aof the yoke.

to lock the V bushing 617 1n position in-theyoke.y v1 7 when the actuator 56 is-installed. j s i f A` bushing 64 surrounds the end 57 of the arrangedto extend be-k offthe cams 45 and`46 The actuator 56 tween-adjacent ends arranged to inovethe cams 45 andj46fout of i vbraking'orlockingposition With the flange 4U of theroller orvvheel- B.

The faces65 and 66 ofthe cams 45 and 46 respectively which areV engaged by the Vcam ends 59'and 60 of the actua-tor are shaped and arrangedso as to allow easy operation ofthe cams by the actuator 56. I j c.

The actuator 56 is in locking position when in the position shovvn'` in Figures 2 and v8. v The Wheel or rollerv is thus potentially locked by reason of the engagement of the cams With the flange 40, the cams being moved into such engagement by thesprings. Locking, hoW- ever, does notoccur until a tendency to move the door arises7 say. for instance, in clockwise directionyvvhereupon the ca1n45 Will be carried in lockwise direction by virtue of its con-- tact with the flanger40 creating Vincreasing pressure thereagainst to anleXtent as to 'prevent rollingmoveinent of the'wheel. ."Thus l thewvheel or roller is locked." `The springs 52 and 53 hold thecains `45 and 46 against the flange40.4 f The action of the cams, in the mannerdescribed,"is a lockingl or gripping action' and is utilized after the door comes to rest tolock the Vdoor against intentional vunauthorized movement. The Weight of the door is such as to obviate the possibilityof sliding the rollers or Wheels when locked. f

The faces 65 and 66 of thecams extendposition to unlock the .of the actuator be 'eliminated Y a polygonal or same and'fthe tion. v The handle 73 lof the roller With suits', and therefore highf-enoughgso `as to allowthe'endsofthe U Y l actuator to strikeV sameinorder tol move `the 'cams-into unlocked position. v .The outer end ofthe stem 5 8 With a liattened surface `67.` Y v A handle 68 is-provided With `an enlarge ment 69 having-a .eircularopening 7,0 therein to kthe handle 7l which has a threaded en'dforengagement by .an'ut Z2 for pulling the ygib downwardly f vvheel B. [The positionofthe handle shovvn in Figure" land Vlof the Acam faces 59 and 60` 56 inFigu're 2 is the'position assumed byth'ese parts vvhen"V the roller Vor Wheel B is lockedorbraked and the position A of theparts `in' Figure, 3- is when the Wheel'- is `unlocked or the .A brake released to *allow avbushing v6l VWhich 1s f ree rotationof the Wheel or roller B. 1 Should it .be

.employed 010 appledta the stem 58 of'the actuator 56 for unlocking .stem 58 Would in suchevent be provided with desired; the tandis ce miglia and-a vtemporaryV handle 4Z3 y otherend ".774 V'of uneven `shape 'to'lock the handleontotheend of the `stein 58'Whereby the actuator 456'1nay be'moved into, cams 45 andv 46 from eni gagementwith thjesange40 of the 'roller or I the rollers. The i so that any ordinary 'tool Would not fit-the handle 78 56 5 into; unlocking ,orV {brake-releasing posi#- is desiredto unlockori Y The roller `or `ufilieel B is sh'ovvn aspro'vided providedwith 'an f i l c opening of like "shape to be applied l'over the Y end 74 `of theistem forfturning'the actuator isfremovable' and is to f I Y vbe applied .to thel actuator 56`only; when it'VVV release the" brake holdl ving the roller' B-against movementon .the fgj 1 lrail'O.- f ma lvvith an linn'er'annular flange i against which f the cams 45 and 46`engage for locking'orlbrak'- ing the roller against accidental movement. However, the cams'could bevarrangedjfor frictional engagementfvvith vsome other part the invention isnot` to be iin 'equallysatisfactory-rel I i limitedto thefiange40, but includesother equivalent*arrangements ofthe parts.A *The postszla-ndQ vvhileb anddescribed as tubularare illustrative'only, and any desired. Adoor ccnstruction having couldbe substituted(4 as shown in 'Figures 2`and-8.v I v .Y vFigure l0k illustratesa-diierentltypegof 'ii i Ving illustrated ,i

and Y66a i. a.

handle vvhichconsi'stsgof an 'enlargement Y' p 74 having a circular'japerture'75 inthe saine f` for` application overthe ment receives the. gib ,71 for securing it tothe stem. f'- Y 1 '1 Lugs 76 and?? are cast on the outenplate or side member l? so thatrthefhandle ,mayY be moved against either lug when moved to unlocking position. The handle will extend A vertically when in'loclred'position.

The invention has been describediherein more or less precisely, yetitis understood that 4theiiivention is not to be limited thereby, as changes may befmadein the arrangementand proportion'of parts', and equivalents maybe substituted without departing from the spirit and scope of the invention.

` The invention is claimed as follows :y

l, A' hangar door -roller .construction in`V cluding a roller frame, a roller supported in Y ysaid frame, 'said vroller having an Vinner, annular flange and a hub,"acollar`on said hub, a

l byfsaid ears for moving said camsaway said iiai'ige torelease theroller.v`

pairrof spaced ears extending radially from said collar, cams carried by said ears, springs between said collar and said cams to urge4 said cams .against said flange, and an actuator carried by said ears andextending betweenk said .cams for moving. said camsaway from said flange. against the action `of the springs when said. actuator Vis turned in either of two directions. A i2. A'hangar door roller constructionin` cludingl a'roller frame, a roller supported in said frame, said roller'havin'g antinner annular flange anda hub, a collar sfree on said hub, said collar having a pair of` spaced cams n g 'n normally engaging saidA flange, springsv forv and. :in-actuator cai'ciedfbyl said cams out? of braking posieither said hub on the same sideofgthe roller ras said flange and ixed` against rotation, pairs of axially spaced 'ears'extending' radiallyl from said memb-er,'a cam lpivoted between each pair `of said ears and having a face en gageablefwith said flange-said cams being oppositely movable, springs ybetween said member andsaid fcam's for normally mainbetween said member and said cams foriior-y mally maintaining said cams in locking en` gagement with said flange,v and an actuator supported insaid -earbetween said cams for `moving said camsaway from said flange to release the roller: Y

Y 5.'A hangar door rol er construction including a roller havingva lateral annular flange; and av hub, a member supported on said hub on the saine side 'ofthe roller as said flange and fixed against rotation, a pair of axially spaced ears extending radially from said member, al pair of oppositely movable `cams pivoted between said ears, each cam having'a flange engaging'face of, difsprings between said memberv and said camsl for normallyma-intainingisaid cams in locking engagement with said flange, and an actuator supported in said ear between l said c'ains'for moving said cams away` from'said flange to 'release the-roller, one cam increase ingV its wedgingjef'efct between said member and the flangefwhen effort is madeto 'move the door in one'dir'ect'ion and the other cam Vferent ra'diusjtliaii the radiusl of the flange,V

i sa

increasing' its'wedging effect betweenV said i member and said flange when eiiort' is made to move the door in Ythemopposite direction.

ln testimony whereof I have hereunto subscribed my name at Danville, Illinois, county ofjvermiiioa l, p A y n I i A A i i JOHNEJSCOTy taining saidcams against said flangein'lockT ing engagement, and anactuator supported fromk 4. `A lhangar door `roller ,construction including f i flange and ahub,a.memberfsupported on said hubi-on l axially spaced earsextending'radially .from

a roller.; havingarllateral annular,

said member, apairbf -opp'ositely movabley cams pivoted between Vsaid ears, each cam having a-v flange engaging face .of-dierent radius than the radius of the ange, springs Y 

